Freewell Multicoated ND Filter are constructed to reduce the light hitting the sensor , which slow down the camera's shutter speed. This creates a more natural looking motion blur that smooth out footage & helps reduce the appearance of "jello" effect from the camera's rolling shutter. The ND Filters can also be used for reducing lens flare while shooting into sun and for toning down highlights while filming outdoors. ND4 : Cuts light by 2 stops (For cloudy day) ND8 : Cuts light by 3 stops (For normal sunny day) ND16 : Cuts light by 4 stops (For sunny day) ND32 : Cuts light by 5 stops (for very bright sunny day)Freewell Lens cleaner which comes free included in your kit to make sure that you get great pictures & video keeping your lens clean from dust , finger prints & oil marks before you fly. HD Glass with MULTILAYER coating to shoot 4K Videos Snap Fit Easy installation Light weight with no negative effect while using on gimbal or Drone. Include ND4/ND8/ND16/ND32 Lens Cleaner , Protective case Protect & suitable for lens of GoPro Hero5 & Hero6 Black